In a pot of boiling water, blanch the potato slices for 4–5 minutes (until they are cooked but not soft), the lotus root for 2 minutes, and the celery for 30 seconds. You can add the ingredients with the longest cooking time first, then add the others to the same pot to cook together. Drain the vegetables and transfer them to an ice bath to cool while you prepare the rest of the ingredients, then drain again.
Heat the oil in a wok to 390ºF. Add the chicken wings and fry them over medium heat, turning occasionally, until golden brown on both sides. Remove the wings from the oil and drain them on a paper towel-lined plate. Strain and reserve the frying oil. Wipe out the wok.
Put 1 tablespoon of the reserved oil back into the wok and heat it over medium. Add the ginger, red onion and garlic and fry them briefly until fragrant. Add the shrimp and cook them for about 1 minute on each side, or until they’re cooked through. Remove the shrimp from the wok and set them aside but leave the aromatics in the wok.